Skiving-machine.



No. 726,285; PATENTED APR. 28, 1903. F..L. HARMON. SKIVING MACHINE.

APPLIOATION FILED AUG. 1} 1899.

BO MODEL. 6 2 SHEETS-SET 1.

N0 MODEL.

PATENTED APR. 28, 1903.

F. L. HARMON.

SKIVING MACHINE.

APPLICATION FILED AUG-.1. 1899.

2 SHEETS-SHEET 2.

To all whom it may concern.-

UNITED STTES ATENT FRANK L. HARMON, OF BEVERLY, MASSACHUSETTS.

SKlVlMG ACi-IIHNE.

SPECIFICATION forming part of Letters Patent 3105726385, dated April 28,- 1903.

Application filed August 1, 1899. Serial No. 725,783. (No model.)

V Be it known that I, FRANK L. HARMON, of Beverly, in the county of Essex and Com monwealth of Massachusetts, have invented a new andusefnl Skiving-Machine, of which the following is a specification, reference being had to the accompanying drawings.

The machine which is the subject of this invention is designed for skiving o'r beveling pieces of leather near their edges, so that a folded edge may be formed; by folding the skived part. I

A machine for skiving or beve'ling the edges of leather for this purpose has been in universal use. In order to show the difierence between this machine, which is old, and the machine which is alleged to be new, I name some devices employed in the former which are not employed in the latter. Said old machine contains the following devices: an overhanging arm directly in the Way and in the light of an operator, under which arm the leather is moved in practice, and a mechanism com prising four shafts and six gears,some ofwhich are made as hard as any known material and process will admit to alleviate in some degree the wear occasioned on account a of their speed and some of which are made of rawhide to'insure some degree of quietness; but the fact that the machine disclosed in this application has only one shaft and no overhanging arm and no worms, worm-wheels, or gears and that it can be built for less than half of the cost of making any other machine made heretofore for the purpose is proof that the machine is new and useful.

It is obvious that a machine'which does not contain the above-named parts of the machine;

which is old cannot be regardedas a mere improvement upon such a machine, but is in itself a new and. distincttype of machine; because the scheme arrangement and construction of the machine shown and described in my application, resulting in a machine with only one shaft instead of four and with no gears instead of six gears and having no overhanging arm instead of one directly in the way and in the lightof an operator, isindependent of the scheme arrangement and construction of the oldmachine referred to, wherein it is absolutely necessary to use them.

The whole construction of thismaohine will be. hereinafter set forth, and shown in the drawings, and these and many other novel features will hereinafter appear and will be claimed in the claims appended hereto.

Figure 1 is an end elevation of the machine Fig.

Fig. 3 is a side eccentric or cam and a slide-bar to be vibrated by said feed eccentric or cam. Figs.

6, 7, 8, 9, and 10 are detail views of parts of a feeding device whereupon a piece of leather,

Fig. 11 shows an-" other form of feeding device which may be may be moved in practice.

substituted. Fig. l2isadetail view showing a rotatory disk skiving-knife and also a piece of leather in section between a p'resser-foot anda feeding device as presented in practice to said rotatory disk skiving-knife and also showing the shape of the skived part of the leather after it is skived or beveled. Fig. 13 is a. detail view of a part of a lever for supporting a part of the feeding device. Fig. 14 is a sectional detail view of a post for supporting a rod upon which a presser-foot may be adj ustably secured and also for supporting a part of the feeding device.

' The grooved belt-wheel A is shown in Fig. 1 near the bottom and is shown in Figs. 2, 3, and 4 fast to the shaft A, shown journaled in the journal-bearings of the support A of said shaft A and is shown by dotted lines in Figs. 1, 2, 3, and 4. To prevent said rotatory disk skiving-knil'e A (shown in Figs. 1, 2, 3, and 4) from being dangerous to an operator, it is covered, with the exception of a small part of the cutting edge, by the saucershaped guard A shown secured to the bracket A, shown fast to said support A Upon the lower end of said shaft A. is the eccentric or cam A (Shown in Fig. 5 and also in Figs. 1, 2, and 3.)

The slide-bar A (shown in Fig. 5) is shown in Figs. 1, 2, 3, and 4 connected with said eccentric or cam A. and mounted in the ways A secured to the frame B, as shown in Fig. 3. Apart of the lever D", with a slot therein,

Fig. 4 is an end eleva- The rotatory disk skiving-knife A. is shown in Fig. 12 rigidly secured upon the upper end' ing-knife A.

f tion-wheel C ably secu red to one end of the friction-band 3' (shown in Fig. 6) by the screw B fitting is shown in Fig. 13. In Fig. 2 on the lefthand side said lever l) is shown in full, and

the stud 0, upon which the feed-roll 0' is shown rotatably secured, is adjust'ably se cured in the slot shown in said lever shown in Fig. 13 by clam ping said lever D" between collar shown on said stud O at the right oi. said lever D and the not shown on said stud Cat the left of said lever D by said nut,-

and the lever D is shown pivoted to the support D, which is really a part of the frame B, by the screw. D

When the cutting edge of the rotatory disk skiving-knife A is worn away, so that it is out of proper relative position with the feedroll C, the stud 0 may be loosened and adjusted by hand in the slot shown in the lever D in Fig. 13 in such a mauneras to place said feed-roll G into proper relative position with the'cutting edge'of said rotatory disk skiv- Fig. 14: shows a portion of the post- C shown in Figs. 1', 2, and 3. Upon said poriion of said post 0 is shown the projectionloosely in a hole in said'feed-lever and fast in said end of said friction-band, as shown in Figs. 1, 2,13, and 4. The link 15% (shown in Fig. 10) is movably secured to said feedlever B by the screw B fitting loosely in the hole in the link B (shown in Fig. 10) and fast i'nto the second hole from the upper end of said feed-lever B. (Shown in Fig. 7.) The screw B (shown in Figs. 1, 2, and 3) extends through'the slot shown in said link B (shown in Fig. 10,)fitting loosely in said slot, and is fast in the other end of said friction-band B". The friction-band B is shown upon the friction-wheel C in, Fig. 3, and the forked end of said feed-lever. B is shown .upon the block B,'(shown in .Fig. 9,) which block ismovably secured to the screw B (shown in Fig.

8,) which screw is fast to said slidebar A (Shown in Figs. 5 and 3.)

. A round belt (not shown) operating in the groove of the belt-wheel A rotates said beltwheel, the shaft A secured thereto, the rotatory disk skiving-knife A secured to the upper end of said shaft, and the eccentric or cam A, secured to the lower end of said shaft, and said eccentric or. cam rotated, as aforesaid, in the opening of the slide-bar A (shown in Fig. 5) causes said slide-bar to be vibrated to and fro, as is plain by Fig. 5. When said slide-bar Aiis thus moved to the right in Fig.

recess upon the upper end of said feed-lever, movably secured on the screw B fast in one end of said friction-band B, is moved on said "screw B and the link B .movably secured on the screw B fast in said feed-lever, is carried to the'right by said feed-lever, and the screw B loose in the'slotin said link and .fast in the other end of said friction-band B} is moved by said link,-thereby forcing the friction-band B to grip the friction-wheel C and turn said friction-wheel toward the left in Fig. 3, thereby turning'the shaft C The friction-wheel C and the gear C are fast to said shaft C, as shown in Figs. 1 and 3, and as said shaft 0 is rotatably mounted in the post C and in the projection O on the post C as above described and as shown in Figs. 3 and 14, said shaft, friction-wheel, and gear are thus moved together. The gear is shown in Figs. 1, 2, and 3. Said gear C is a part of the feed-roll C, which is .movably secured to the stud 0. (Shown in Figs. 1, 2, 3, and 4.) Said gear 0 meshes into said gear C, so that the teeth may be forced farther into mesh without bottoming, and is moved by said gear C in the direction indicated by the'arrow shown on said feed-r0110. One

end of the spring 0 (shown in Fig. 3) is fast" being prevented from. being moved by the slipping movement of the friction-baud on account of thejournal-bearing in the split post 0 (shown in. Fig. 3) gripping the shaft C on account of the screw D and the spring D thereon, thereby normally causing friction between said shaft 0 andithe bearing. By .the above description of the assembling of the feed-roll C, the friction-wheel G and the devices connecting saidfeed-roll with said friction-wheel it is plain that r aid feed-roll is moved intermittently. I i

. As the spirit of my invention resides in a combination of instrumentaliti'emas followsa shaft supported in jourlialrbe'arings'iu a nearly-vertical directiom'af means for rotating said shaft, aknife; sec'uredto said shaft above said journal-beatings," a feeding-device, and a means foroperatingsaid feeding device .co'mbinedinsuch a manner that a piece of leather may be moved-over a knife by a feeding device and the shaviugcut from said leather-may bemoved nndera knife,.

and so that the overhanging arm which has When formerly been employed in machines for the purpose is dispensed with, and so that asimpler machine'is produced than has heretofore been made for the purpose-this part of my invention is independent of any particular form of feeding device, and therefore any feeding device "may be substituted for the one used-'- such, for instance, as. the pawland-ratchet device shown in Fig. 11.

The rod 1), (shownyin Figs. 1, 2, and 3,) securedin the post by the screw D is ad justable up and down in said post C -and may be secured at any elevation-by said screw D The presser-foot' D is adjustably secured uponsaid rod D by the screw 1), which extends through the slot D in said presserfoot and is threaded into said rod, clamping said presser foot to saidrod. The presser foot or device-D is shown'in Fig. 2 set as near the cutting edge of said rotatory disk skiving-knii'e A as possible without hitting said .knife. When saidknife A is worn smaller, said presser-foot maybe adjusted and secured near. to the cutting edge of said knife by loosening the screw-1;) and moving saidpresser-jfo'ot' D forward to'the desired position and tightening said screw D The feed-roll Cis shownbelow said knife A. in Fig. 3, and whensaid feed-roll is turned, as and by devices, hereinabove'described, a piece of leather may-be moved .by-said feed-roll be.- tween the .presser foot or device D and said feed-roll to saidknife A No wrinkle is formed in said leather where said leather comes in contact with said knife, as is plain by the proximity of said'presser foot or device D to said knife A .-(Shown in Fig. 2.)

' The lever D (shown in- Fig.2 and 3,) a part of which lever is shown'in detailin Fig. 13 and-to one end of which lever-thefeedroll 0 is adjustably secured, as above described, is pivoted at the center of said lever by the screw'D which is fast iua projectionon the support D, which is a part of the frame B.-- In the other end of said lever 13 (shown in Fig. 3) is shown a screw D to which the upper end of the spring -D is shown secured, and the lower end of said spring isshown secured, to the screw D,

which is fast in said support D In Figs. -1, 2, 3, and 4 the screw 1") is shown secured into the projection of the support D By Fig. 3, in which the lever D is shown resting upon the screw D it is plain that the lever 1) may be adjusted and secured by said screw D and as said feedroll 0 is supported by the stud O, adjustably secured in the upper end of the lever D,

it is also plain that by said screw D said feed-r0110 is prevented from striking said rotatory disk skiving-knife A that when a piece of leather is moved between said feed-roll C and said presser foot or device D by said feed-roll, that said feed roll is mechanically forced downward from said presser-foot by said piece of leather far bolt D 7 projects.

enough to allow said piece of leather. to ass through, the teeth of the gears C and 0 admitting; and when thinner pieces of leather are passed through, between said feed-roll C and said presser-foot D, said spring D causes said feed-roll to be adjusted automatically against said piece of leather. Therefore it is plain that said feed-roll C is 'yieldingly supported on account of said lever D the pivotal screw Di, and the spring-D In Fig. 12 the leather l) (shown in section) is shown as skived or beveled. Fig. 12 also shows that the leather after it is skived or beveled passes over said rotatory disk skiv ing-knife A but by Fig. 2 it will be seen that the leather is passed over the guard A which guard prevents the part of the leather that is not skived or beveled from striking said knife A and also prevents said knife from being dangerous to an operator. By Fig. 12 it is also plain that the shaving 1) cut from said leather falls under-said knife A In Figs. 1, 2, 3, and a the chute D is shown, upon which chute the shavings fall.

In Fig. 3 it is shown that the support A, in

the journal-bearings of which support the shaft A is journaled, is supported. by the bolts D and D", which bolts extend through the support D and are rigidly fast in said support A. Then uts D and D are shown upon the bolts D and D".

In Fig; 4 it will be observed that in thesupport D is the slot D ,.throi1gh which the By' loosening the nuts D and 1) (shown in Figs. 3 and 4.) said sup port A", said shaft A, rotatably mounted therein, said knife A fast to the upper end of said shaft A, said bracket Aflfa'st to said support A, and said guard A fast to said bracket A, may be'bodily' moved in order to change the relative position of said knife A to said feed-roll C, so that diderent bevels may be skived on said leather, and may be again secured by again tightening said nuts 1) and D Having thus fully described my invention as plainly and briefly as possible, I claim as follows:

ing saidfeeding device. By the above-named devices, it is plain' 2. The following combination of instrumentalities, viz: an adjustable rigid device for rotatably supporting a shaft in a nearly-verticaldirection; means for adjusting said rigid device; a shaft rotatably supported in avertical, or nearly-vertical direction in said device for supporting it; a rotatory disk skiving-knife secured to the upper end of said shaft, above said rigid device for supporting said shaft; a-guard for covering said knife,- except a small part of the cutting edge thereof; means whereby said shaft may be rotated; a feeding device; a presser-foot; means for operating said feeding device.-

3. Thefollowingcombination ofinstrumentalities, viz: a rigid device for rotatably supporting a shaft in a nearly-vertical.direction; a shaft rotatably supported in a vertical, or nearly-vertical direction in said device for supporting it; a rotatory disk skiving-knife secured to the upper end of said shaft, above said rigid device for supporting said shaft; a guard for covering said knife, except a small part of the cutting edge thereof; means whereby said shaft may be rotated; a feedingdevice'; a presser-foot; means whereupon said feeding device may be moved whereupon a piece of leather may be moved intermittently.

4. Thefollowingcombination ofinstrumentalities, viz: an adjustable rigid device for rotatably supporting a shaft in a nearly-vertical direction; means for adjusting said rigid device; a shaft rotatably supported in a vertical, or nearly-vertical direction in said device for supporting it; a rotatory disk skivingknife secured to the upper end of saidshaft, above said rigid device for supporting said shaft; a guard for covering said knife, except a small part of the cutting edge thereof; means whereby said shaftmay be rotated; a feeding device; a presser-foot; means whereupon said feeding device may be moved whereupon a piece of leather may be moved intermittently.

5. The following combination of instrumentalities, viz: a rigid device for rotatably supporting a shaft in a nearly-vertical direction a shaft rotatably supported in a vertical, or nearly-vertical direction in said device for supporting it; a rotatory disk skiving-knife secured to the upper end of said shaft, above said rigid device for supporting said shaft; a guard for covering said knife, except a small part of the cutting edge thereof; means whereby said shaft may be rotated; a feeding device; means whereupon a part of said feeding device is yieldingly supported; a presserfoot; means for operating said feeding device.

6. The following combination of instrumentalities, viz: an adjustable rigid device for rotatably supporting a shaft in a nearly-vertical direction; means for adjusting said rigid device; a shaft rotatably supported in a vertical, or nearly-vertical direction in said device .for supporting it; a rotatorydisk skivingknife secured to the upper end of said shaft, above said rigid device for supporting said shaft; a guard for covering, said knife, except a small part of the cutting edgethereof means whereby said shaft may be rotated; a feedingdevice; means whereupon a part of said feeding device is yieldingly supported;

a presser-foot; means for operating said feeding device.

7. The following combination of instrumenialities, viz': a rigid device for rotatably supporting a shaft in a nearly-vertical direction; a shaft rotatably supported in a vertical, or nearly-vertical direction in said device for supporting it; a rotatory disk skiving-knife secured to the upper end of said shaft, above said rigid device for supporting said shaft; a guard for covering said knife, except a small part of the cutting edge thereof; means whereby said shaft may be rotated; a feeding device; means whereupon a part of said feeding device is yieldingly supported; a presserfoot; means whereupon said feeding device may be moved whereupon a piece of leather may be moved intermittently.

8. The following combination ofinstrnmentalities, viz: an adjustable rigid device for rotatably supporting a shaft in a nearly-vertical direction; means for adjusting said rigid device; a shaft rotatably supported in a vertical, or nearly-vertical direction in said device for supporting it; a rotatory disk skivingknife secured to the upper end of saidshaft, above said rigid device for supporting said shaft; a guard for covering said knife, except a small part of the cutting edge'thereof; means whereby said shaft may be rotated; a feeding device; means whereupon a part of saidfeeding device is yieldingly supported;

a presser-foot; means whereupon said feeding device may be moved whereupon a piece of leather maybe moved intermittently.

9. The following combination ofinstrumentalities,viz: a rigid device for rotatably supporting a shaft in a nearly-vertical direction;

a shaft rotatably supported in a vertical, or

nearly-vertical direction in said device for supporting it; a rotatory disk skiving-knife secured to the upper end of said shaft, above said rigid device for supporting said shaft; a guard for covering said knife, except asmall part of the cutting edge thereof; means whereby said shaft may be rotated; a feeding device; means for adjusting a part of said feeding device; a presser-foot; means for operating said feeding device.

10. The following combination of instrumentalities, viz: an adjustable rigid device for rotatably supporting a shaft in a nearlyvertical direction; means for adjusting said rigid device; a shaft rotatably supported in a vertical, or nearly-vertical direction in said device-for supportingit; a rotatory disk skiving-knife secured to the upper end of said shaft, above said rigid device for supporting said shaft; a guard for covering said knife, except a small part of the cutting edge thereof; means whereby saidshaft may be rotated; a feedingdevice; means for adjusting a part of said feeding device; a p'resser-foot; means for operating said feeding device.

' 11. The following combination of instrumentalities, viz: a rigid device for rotatably supporting a shaft in a nearly-vertical direction; a shaft rotatably supported in a vertical, or nearly-vertical direction in said device for supporting it; a-rotatory disk skivingknife secured to the upper end of said shaft, above said rigid device for supporting said shaft; a guard for covering said knife, except a small part of the cutting edge thereof; means whereby said shaft may be rotated; a feeding device; means for adjusting a part of said feeding, device; a, presser-foot; means whereupon said feeding device may be moved whereupon a piece of leather may be moved intermittently.

12'. The following combination of instrumentalities, viz: an adjustable rigid device for rotatahly supporting a shaft in a nearlyvertical direction; meansfor adjusting said rigid device; a shaft rotatably supported in a vertical, or nearly-vertical direct-ion in said device ,for supporting it; a rotatory disk skivij'gg-knife secured tot-he upper end of said shaft, above said rig d .device for supporting said shaft; aguard for covering said I knife, except a small part of the cutting edge thereof; means whereby said shaft may be rotated; a feeding device; means for adj usting a part of said feeding device; a presserfoot; means whereupon said feeding device may be moved whereupon a piece of leather may be moved intermittently.

13. The following combination of instru mentalities, viz: a rigid device for rotatably supporting a shaft in a nearly-vertical direction; a shaft rotatably supported in a vertical,

or nearly-vertical direction in said device for supporting it; a rotatory disk skiving-knife secured to the upper end of said shaft, above said rigid device for supporting said shaft; a guard for covering said knife, except a small part of the cutting edge thereof; means whereby said shaft may be rotated; a feeding device; means'whereupnn a part of said feeding device is yieldingly supported; means for adjusting a part of said feeding device; a presser'foot; means for operating said feeding device.

14:. The following combination of instrumentalities, viz: an adjustable rigid device for rotatably supporting a shaft in a nearlyvertical direction; means for adjusting said rigid device; a shaft rotatably supported in a vertical, ornearly-verticaldirection in said device for supporting it; a rotatory disk skiving-knife secured to the upper end of said shaft, above said rigid device for supporting said shaft; a guard for covering said knife,

except a small part of the cutting edge thereof; means whereby said shaft maybe rotated; a feeding device; means whereupon a part of said feeding device is yieldingly supported; means for adjusting a part of said feeding device; a resser-foot; means for operating said feeding device.

15. The following combination of instrumentalities, viz: a rigid device for rotatably supporting a shaft in a nearly-vertical direction; a shaft rotatably supported in a vertical, or nearly-vertical direction in said device for suppoi ting it; a rotatory disk skivingknife secured to the 'upperend of said shaft, above said rigid device for supporting said shaft; a guard for covering said knife, except a small part of the cutting edge thereof; means whereby said shaft maybe rotated; a feeding device; means whereupon apart of said feeding device is yieldingly supported;-

means for adjusting a part of said feeding device; a presser-foot; means whereuponsa d feeding device may be moved whereupon a piece of leather may be moved intermittently.

16. The following combination of instrumentalities, viz: an adjustable rigid device for rotatably supporting a shaft in a nearlyvertical direction; means for adjusting said rigid device; a shaft rotatably supported in a vertical, or nearly-vertical direction in said device for supporting it; a rotatory disk skiving-knifesecured to the upper end of said shaft, above said rigid device for supporting said shaft; a guard for covering said knife,- except a small part of the cutting edge thereof; means whereby said shaft may be rotated; a feeding device; means whereupon a part of said feeding device is yieldingly supported; means for adjusting a part of said feeding device; a Presser-foot; means whereupon said feeding device may be moved whereupon a piece of leather may be moved intermittently.

17. The following combination of instrumentalities,viz :.a friction-wheel; means forrotatably supporting said friction-wheel; a fric tion-band connected with said friction-wheel; a spring connected with said friction-band and exerting power thereon; a lever movably connected with said friction-band; a link movably connected with said lever and said friction-band; means for vibratingsaid lever.

18. The following combination of instrumentalities, viz: an adjustable rigid device for rotatably supporting a shaft in a nearlyvertical direction; means for adjusting said rigid device; a shaft rotatably supported in a vertical, or nearly-vertical direction in said device for supporting it; a rotatory disk skiving-knife secured to the upper end of said shaft, above said rigid device for supporting said shaft; a guard for covering said knife,

except a small part of the cutting edge there of; means whereby said shaft may be rotated; a feeding device; a presser-foot or device; means for adj usfing said presser-foot or device toward said knife; means for adjust-l ing said presse'r-foot vertically; means for operating said feeding device.

19. The following combination of instrumentalities, viz: an adjustable rigid device for rotatably supporting a shaft in a nearlyvertical direction; means for adjusting said rigid device; a shaft rotatably supported in a vertical or nearly vertical direction in said device for supporting it; arotatory disk skiving-knife secured to the upper end of said shaft, above said rigid device for supporting said shaft; a guard for covering said knife, I vice comprising a cam, or eccentric and a deexcept a small part of the cutting edge therevice adapted to be operated thereby, between of; means whereby said shaft may be rosaid shaft anda part of said feeding device. hated; a feeding device; a presser-foot or de- FRANK L. HARMON. vice; means for adjusting said presser-foot or device toward said knife; means foradjusting said presser-foot vertically; a connecting de- Witnesses:

FREDERIC L. WALLIS, GASSIE HATFIELD. 

